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Note 12 - Subsequent Events
 6 Months Ended
Jun. 30, 2019
Notes to Financial Statements  
Subsequent Events [Text Block]
Note
12.
 Subsequent Events
 
In
July 2019,
affiliates of Domain Partners, LLC, a significant shareholder of the Company, purchased from the Company
$600,000
aggregate principal amount of Notes. The proceeds from the issuance of the Notes will be used for general corporate purposes and working capital. These Notes accrue simple interest on the outstanding principal amount at a rate of
8%
per annum and mature
one
year from the date of issuance.
 
On
August 1, 2019
and
August 2, 2019,
the Company’s board of directors and a majority of the Company’s stockholders, respectively, approved a reverse stock split at a range of between
1
-for-
2
and
1
-for-
10,
with the final exchange ratio to be determined by the board of directors, which as of the date of filing has
not
yet occurred.  The share and per share information contained in the financial statements and footnotes do
not
reflect the impact of any such reverse stock split.